Heavy-loaded precision-displacement linear motor

Abstract

The invention relates to a heavy-loaded precision-displacement linear motor, which belongs to the technical field of electromechanics. The linear motor comprises an intermediate extension mechanism, a front clamping mechanism, a back clamping mechanism, a non-clearance connecting frame and rigid guide rails, wherein the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism are extensible mechanisms or material bodies; the non-clearance connecting frame arranges and fastens the intermediate extension mechanism in the motion direction; the front clamping mechanism and the back clamping mechanism are arranged at both ends of the intermediate extension mechanism and are fastened through the non-clearance connecting frame; the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism are connected and fixed through the non-clearance connecting frame to form a whole, and the whole is arranged between the rigid guide rails; the non-clearance connecting frame is provided with a bearing; and the position of a frame corresponding to the output extension displacement of the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism is provided with a hinge with flexible structure. The heavy-loaded precision-displacement linear motor can furthest present the precise extension deformation quantity of a precise deformation mechanism or object as well as the extension output force of a deformation mechanism or object.

Description

technical field [0001] The invention relates to a device in the technical field of motors, in particular to a heavy-duty precision displacement linear motor. Background technique [0002] In recent years, the field of electric and magnetostrictive materials has developed rapidly, and new types of sensitive materials such as giant magnetostrictive materials, piezoelectric ceramics and magnetostrictive shape memory alloys have been produced, which can be used in the development of precision drives, sensors and linear motors. These materials have the advantages of high energy density, high output power, and precise stretching and deformation. However, in the development of precision linear motors based on these types of smart materials, the movement steps caused by the stretching of materials are small, and these stretches are often affected by the motor. The matching structural transmission or the clearance of the connecting link is offset; the expected stretching distance of ...

AI Technical Summary

Problems solved by technology

However, although the clamping part of the motor adopts a U-shaped electromagnet that can produce double the clamping force, the clamping force is relatively small, and, due to the lack of clamping force of the clamping mechanism, the clamping part and the table are moving During the process, there is relatively small relative slip and movement, and the thread gap between the magnetostrictive drive part and the clamp part will cause the precise displacement of the magnetostrictive part to be offset or interfered to a certain extent, thereby reducing the drive displacement and driving Accuracy suffers, lack of drive

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